I take a photo with a camera (not a third-party application). I want to save the image to disk. Is there a way to directly write byte  to a file without intermediate conversion to bitmap?
now looks like this. it doesn't work very fast, as it seems to me, because of the conversion.
bitmap = BitmapFactory.decodeByteArray(source, 0, source.size()) bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
You won't be able to write byte  directly into the stream (anticipating such responses), you need to support the jpeg format.
If you don't need an intermediate
bitmap at all, then get a photo from the camera directly as a file. With the help of a similar intent.
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), <имя файла>)); intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);